I have a hypothosis to offer.Let's approach this problem from a side or back door.Sometimes that helps.I really think Allie Tootle could be a sister or some relation to Richard Tootle b. abt. 1765. Here is my theory:create a family tree starting with William Cason Jr. b. abt. 1695- father of Hillary Cason Sr. b abt 1737 - father of Dennis Casonb. abt. 1770 - father ofSamuel Cason b. abt.1799maried to Jane Tootle, daughter of Richard Tootle.
Back to William Cason Sr. and branch off with son Henry Cason b. abt. 1732 - father ofWilliam b. abt. 1768 - father of Elizabeth Cason b. abt. 1809married to Shadrach Tootle Dixon, son of Allie Tootle b. abt. 1770and Robert Dixon.
It looks highly possible don't you think?Allie's daughter-in-lawmarried to a descendant of W. Cason Sr. and Richard's daughter married to a descendant of W. Cason Sr.